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Abstract

The overall image quality benefits substantially from good reproduction of black tones. Modern displays feature
relatively low black level, making them capable rendering good dark tones. However, it is not clear if the
black level of those displays is sufficient to produce a "absolute black" color, which appears no brighter than an
arbitrary dark surface. To find the luminance necessary to invoke the perception of the absolutely black color,
we conduct an experiment in which we measure the highest luminance that cannot be discriminated from the
lowest luminance achievable in our laboratory conditions (0.003 cd/m2). We measure these thresholds under
varying luminance of surround (up to 900 cd/m2), which simulates a range ambient illumination conditions. We also analyze our results in the context of actual display devices. We conclude that the black level of the LCD display with no backlight dimming is not only insufficient for producing absolute black color, but it may also appear grayish under low ambient light levels.

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Journal of Applied Remote SensingJournal of Astronomical Telescopes Instruments and SystemsJournal of Biomedical OpticsJournal of Electronic ImagingJournal of Medical ImagingJournal of Micro/Nanolithography, MEMS, and MOEMSJournal of NanophotonicsJournal of Photonics for EnergyNeurophotonicsOptical EngineeringSPIE Reviews